Electrolyte Disturnabces On EKG Flashcards Preview

Cardiovascular Medicine > Electrolyte Disturnabces On EKG > Flashcards

Flashcards in Electrolyte Disturnabces On EKG Deck (7)
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1
Q

What does low potassium and high potassium do to conduction?

A

Low potassium lowers resting membrane potential so it makes it more automatic. High potassium slows conduction, so it widens the QRS.

2
Q

What does low and high calcium do to conduction?

A

Low calcium prolongs QT and high shortens QT.

3
Q

What does hypokalemia do to the T wave?

A

Inverts it or flattens it

4
Q

What else is present with hypokalemia?

A

Prominent U wave

5
Q

What 3 things do you see on EKG for hyperkalemia?

A

No p wave or flatter p wave, wide QRS and peaked t wave

6
Q

What does the EKG show for hypocalcemia and hypercalcemia?

A

Hypo lengthens and hyper shortens the qt

7
Q

What does low magnesium show on EKG?

A

Prolongs everything and depresses t wave.